From Ohio History Central
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*1000 AD-1650 AD: Ohio's [[Late Prehistoric Period]].
*1802: [[Thomas Worthington]] presented Ohio constitution to Congress for approval.
*1852: Publication of ''[[Uncle Tom's Cabin]]'', written by in Ohio by [[Harriet Beecher Stowe]], increased tensions between the North and the South.
*1865: John Wilkes Booth [[assassinated President Lincoln]] at Ford's Theatre in Washington, D.C.
*1896: Ohioan [[William McKinley]] elected to his first of two terms as the 25th President of the United States.
*1925: The dirigible ''[[Shenandoah ]]''[[crashed]] near Ava, Ohio, killing 14 people.
*1949: The [[General Assembly]] created the Ohio Department of Natural Resources.
*1974: The deadly [[Xenia Tornado]] killed 33 people.